Corrosion behaviour and surface topography for steel plates used in automotive industry exposed to salty corrosive thermo-accelerated medium

Corrosion resistance is one of the essential criteria in the automotive industry, especially in harsh climates, as it causes severe damage to vehicles. Therefore, the anti-corrosion factor should be a complementary and integral part of other safety standards. An experimental investigation for monitoring and evaluating the corrosion behavior of high strength low carbon steel plates with different surface characteristics and treatments conditions used in the automotive industry exposed to a salty, corrosive thermo-accelerated medium has been introduced in this empirical study. The produced samples are divided into four main groups: welded, unwelded, coated, and uncoated. These samples were exposed to an aggressive chemical medium consisting of salty-aqueous spray with a 5% NaCl concentration at 35°C with speed and pressure. All changes in surface features, including topography, roughness, and corrosion products, were measured and analyzed periodically every 8 hours for 24 hours by scanning electron microscopy, optical microscopy, and CSPM imager surface roughness analysis. The results showed that the coated samples had lower roughness values and lower corrosion products after 24 hours under the salty-aqueous spray test

Effect of novolac nanoparticles additions on specific gravity of NBR/CR blends

In this article, novolac nanoparticles with different weight fraction (0-40) wt.% were added to NBR/CR blends and investigate the effect of these additions on the specific gravity of rubber blend. The results obtained shown that the novolac nanoparticles works on increasing the specific gravity of NBR/CR blends, and specific gravity ratio increases with increased novolac nanoparticles percentage

Mechanical Properties of Tri Sustainable NBR/Cement Waste/Rice Husks Silica Blend

The accumulation of agricultural and industrial manufacturing waste is an important environmental problem of the most countries in which the means of recycling these waste are not available. Therefore, it is important to find sustainable green engineering applications for the integration of these waste in the industry and be an environmental, economic and industrial competitor and alternative to materials existing now. Cement waste and rice husks silica were added as a weight nanoscale particles (1μm /0-40pphr) and (10μm /20pphr) respectively to the Acrylonitrile - butadiene rubber (NBR) for making tri sustainable blend. Elongation and modulus of elasticity were measured before and after the addition of cement waste and rice husks to NBR by Tansometer device, The results showed improved the value of the modulus of elasticity after reinforced by cement waste and rice husks, but and at the same time, elongation was decreased

Rheological investigation of SBR/CW/CB tricomposite used to create a sustainable procedure for idler rollers production

The concept of sustainability is now considered the key of the future, not just for industry but also for all planet resources. The real guarantee for the continuation of our life is by recycling all types of industrial waste in such method that combines highly effective efficiency and environmental pollution protection. This will which create a sustainable resource that keeps earth natural resources from depletion. In this study we introduce a technological procedure for using of cement waste in manufacturing engineering parts with high efficiency. Rheological analysis for styrene butadiene rubber has been investigated as a function percentages additives (10-35 pphr) of cement waste (CW) and carbon black (CB). The rheological properties includes torque and thermoplasticity measured at temperature ranges of 165°C,175°C, and 185°C. The tests showed that the cement waste has the ability and efficiency for improving the rheological properties of styrene butadiene rubber